Seismic control of irregular multistory buildings using active tendons considering soil–structure interaction effect

Nazarimofrad, Ebrahim; Zahrai, Seyed Mehdi

doi:10.1016/j.soildyn.2016.07.005

Cited by 27 publications

(22 citation statements)

References 26 publications

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“…To guarantee the accuracy of the results, and to validate the numerical simulation method, the same example from the study conducted by Nazarimofrad and Zahrai [61] was selected and the responses of the building at the first level for the uncontrolled system are compared with the current study in Figure 6. From the figure, the results are identical, and therefore, the current simulation method is valid and reliable.…”

Section: Calibration Of the Numerical Simulationmentioning

confidence: 99%

Seismic Vibration Control of 3D Steel Frames with Irregular Plans Using Eccentrically Placed MR Dampers

Liu

Rahimi

2017

Sustainability

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There has been a significant increase in attention toward designing smart structures and vibration control of structures in recent decades, and numerous methods and algorithms have been developed and experimentally investigated. However, the majority of these studies used the shear frame models to represent structures. Since the simplified models do not reflect the realistic behavior of those structures with irregularity in plan and elevation, the traditional methods for designing an optimal control that guarantees a desirable performance is impossible. In this study, the behavior of a 10-story irregular steel frame building is investigated with and without controlling systems. Two pairs of eccentrically placed MR dampers on each story are used in order to mitigate the coupled translational-torsional vibration. The controlling forces are determined using active, passive-off, passive-on, and clipped optimal controls based on the linear quadratic regulator (LQR) algorithm. The results demonstrate that using pairs of magneto-rheological (MR) dampers with an appropriate distance on lower story levels significantly reduces the inter-story drifts for the corner columns, as well as the roof displacements and accelerations.

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Section: Calibration Of the Numerical Simulationmentioning

confidence: 99%

Seismic Vibration Control of 3D Steel Frames with Irregular Plans Using Eccentrically Placed MR Dampers

Liu

Rahimi

2017

Sustainability

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“…In recent works, a variety of complex and sophisticated control systems with multiple actuation devices has been considered to provide an improved level of vibrational protection. Thus, for example, the usage of multiple Tuned Mass Dampers (TMDs) is proposed in [6][7][8], an innovative Multiple Tuned Mass Damper system that uses the building floors as TMD devices is investigated in [9,10], the combined action of TMDs and Tuned Liquid Column Dampers for control of wind-induced vibrations in super tall buildings is discussed in [11], a system of Multiple Active Tendons is proposed in [12] for vibration control of irregular buildings, and a system of Multiple Cardan Gyroscopes for vibration control of tower structures is proposed in [13]. Interstory force-actuation devices, as those schematically displayed in Figures 1b and 2, are particularly suitable to make up multi-actuator systems for large-scale structures.…”

Section: Introductionmentioning

confidence: 99%

Design of Distributed Multi-Actuator Systems with Incomplete State Information for Vibration Control of Large Structures

Quiñonero

Massegú

Rossell

et al. 2018

Designs

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Abstract:In this paper, we investigate the design and performance of static feedback controllers with partial-state information for the seismic protection of tall buildings equipped with incomplete multi-actuation systems. The proposed approach considers a partially instrumented multi-story building with an incomplete system of interstory force-actuation devices implemented on selected levels of the building, and an associated set of collocated sensors that measure the corresponding interstory drifts and interstory velocities. The main elements of the proposed controller design methodology are presented by means of a twenty-story building equipped with a system of ten interstory actuators arranged in three different layouts: concentrated, semi-distributed and fully-distributed. For these control configurations, partial-state controllers are designed following a static output-feedback H-infinity controller design approach, and the corresponding frequency and time responses are investigated. The obtained results clearly indicate that the proposed partial-state controllers are effective in mitigating the building seismic response. They also show that a suitable distribution of the instrumented stories is a relevant factor in the control system performance.

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“…Alternatively, increasing efforts in recent years have been directed to the development and implementation of control systems for higher seismic performance and enhanced resilience of buildings . A control system usually refers to control algorithms (e.g., active control, semi‐active control, hybrid control, and passive control) and the corresponding controlling devices (e.g., semi‐control hydraulic dampers and active‐control piezoelectric actuators).…”

Section: Introductionmentioning

confidence: 99%

“…[19,20] Alternatively, increasing efforts in recent years have been directed to the development and implementation of control systems for higher seismic performance and enhanced resilience of buildings. [21][22][23] A control system usually refers to control algorithms (e.g., active control, semi-active control, hybrid control, and passive control [24][25][26] ) and the corresponding controlling devices (e.g., semi-control hydraulic dampers and active-control piezoelectric actuators [27] ). Among various control algorithms, semi-active control systems exhibit their attractive characteristics, including less power, higher reliability, and particularly higher adaptability for earthquake events, as compared to their counterparts.…”

Section: Introductionmentioning

confidence: 99%

Improved semi-active control algorithm for hydraulic damper-based braced buildings

Azimi

Rasoulnia

Lin

et al. 2017

Struct Control Health Monit

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Summary Much research has been conducted on structural control systems to improve the seismic performance of structures under earthquakes and, ultimately, offer high performance‐resilient buildings beyond life risk mitigation. Among various structural control algorithms, semi‐active control strategies have been widely accepted for overcoming some limitations existed in either passive or active control systems, thereby leading to better structural performance over their counterparts. In this study, a new semi‐active control algorithm with minimum control parameters is developed to drive the hydraulic damper for effective control of the dynamic deformation of low‐ and high‐rise building structures under earthquake loadings. The new controller allows less input and computation for determining the damping coefficient of the hydraulic dampers while maintaining a higher performance. V‐braced buildings with three varying heights are used as prototypes to demonstrate the effectiveness of the proposed semi‐active damper. Two critical parameters, maximum drift and acceleration of stories, are defined for the performance criteria. The simulation results show that the developed semi‐active damper can significantly improve the seismic performance of the buildings in terms of controlled story drift and acceleration. By use of less input and reduced time delay effects, the proposed control system is comparable with those of existing semi‐active controllers. The findings in this study will help engineers to design control systems for seismic risk mitigation and effectively facilitate the performance‐based seismic design.

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Seismic control of irregular multistory buildings using active tendons considering soil–structure interaction effect

Cited by 27 publications

References 26 publications

Seismic Vibration Control of 3D Steel Frames with Irregular Plans Using Eccentrically Placed MR Dampers

Seismic Vibration Control of 3D Steel Frames with Irregular Plans Using Eccentrically Placed MR Dampers

Design of Distributed Multi-Actuator Systems with Incomplete State Information for Vibration Control of Large Structures

Improved semi-active control algorithm for hydraulic damper-based braced buildings

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